Improvement in bolt-heading machines



2 Sheets-Sheet 1.

Patented Oct. 14, 1879.

G. D. ROGERS. Bolt-Heading Machine.

2 Sheets-Sheet 2.

C. D. ROGERS.

Bolt-Heading Machine. No. 220,497.

Patented Oct. 14, 1879.

[n1/@afar N PLTERB. PMQTQUTNOGRAFHER. WASHINGTON D c UNITED STATESPATENT QEEIcEJ CHARLES D. ROGERS, OF PROVIDENCE, RHODE ISLAND, ASSIGNOR'IO THE AMERICAN SCREW COMPANY, OF SAME PLACE.

IMPROVEMENT IN BOLT-HEADING MACHINES.

Specification forming part of Letters Patent No. 220.497, dated October14, 18795 application led October 28, 1878.

To all whom t may concern:

Beit known that I, CHARLES D. ROGERS, of the city and county ofProvidence, and State of Rhode Island, have invented certain new anduseful Improvements in Heading- Machines5 and I `do hereby declare thatthe following specification, taken in connection withtheaceompanyingdrawiugs, forming part of the same, is a full, clear, andexact description thereof.

The present invention relates to machinery for forming a ilanged headupon screw or bolt blanks by the process of upsetting the end of the rodof metal out of which the blanks are formed. Its purpose is toaccomplish a greater rapidity of operation than has heretofore beencharacteristic of this class of machines, by organizing the machine ashereinafter partienlarly described.

My invention also embraces a means for adjusting the heading-hammer orswaging-tool both vertically and laterally, so as to bring its axis intocoincidence with the longitudinal axis of the blank to be operated upon5 and a further feature relates to means for operating and timing themovements ofthe gage, which at stated times must be in proper positionto determine the length of the blank, and afterward move out of the wayto give room for the heading mechanism to operate.

Referring to the accompanying two sheets of drawings, Figure lrepresents a plan of a headin g-m achine 5 Fi g. 2, a centrallon gitudinal section of the same. Fig. 3 shows a side view of the machine withportions of the frame cut away. Figs. 4 and 5 represent details ofconstruction; and Fig. 6 shows a vertical transverse section, exhibitingthemechanism operating the gage.

In machines of this class as heretofore constructed, it has beencustomary to employ toggle-levers for the purpose of working theheading-hammer, or for working the gripingjaws, or both. Now, whereverthis mechanical power is used thereiis of necessity a sacrice of speedin operation, and consequently a less production. Therefore in myimproved machineI have dispensed with the use of such toggles, andsecure an increased speed and production by the employment of aneccentric and link to operate the heading-hammer, and a cam and leversto move the griping-jaws.

I am aware that these mechanical powers have been used in similarmachines to operate sliding heads and griping-jaws 5 but they never havebeen employed in the combination and arrangement in which they appear inmy improved heading-machine. It is not simply from the fact thattoggle-levers are dispensed withand other orders of levers substitutedthat an improvement is claimed, but because the whole organization ofthemachine accomplishes better results, by reason of the combination ofthese substitutes with other members, as will hereinafter appear.

As shown in the drawings, A represents the bed of the machine, uponwhich moves the sliding head B, carrying the heading-hammer C. Thelongitudinal motions of the sliding head are produced .by an eccentric,as at D, placed upon the shaft E, and connected to the said head by alink, as at F.

The griping-jaws G G are located in the vertical head H of the machine,to which they are confined, as usual, by the locking-arms J J betweenwhich and the face K of said head they have a vertical motion. The lowerjaw, Gr, is seated on a saddle, as at L, which rocks in a chair, as atM, the said saddle being journaled in the plates m, attached to the endsof the chair, which can be vertically adjusted to effect the propermovement of the jaw by means of a block, as at M', havingan inclinedface.

The jaw Gr, during its upward movement, acts, in connection with thetubular block N, through which the wire is fed, as a shear to cut oifthe blank from the wire, the jaw Gr', by its weight, retaining the saidblank in place until the jaws have been raised and G has come in contactwith an adjustable screw, 0, and the blank thereby securely clamped forthe heading operation. This vertical movement of the jaws G G for thepurpose of shearing and clamping the blank is produced by the rocking ofthe saddle L, to the shaft lof which a long lever, P, is attached, thesaid lever being worked by a dam, as at Q, on the shaft E. Theslow-moving toggle-levers for operating and clamping the jaws are thusdispensed with, and equally effective but more rapid results areobtained by the cam, lever, and saddle, the employment of which, underthe combination and arrangement described, constitutes a feature of myinvention.

The next feature relates to an adjustment of the heading-hammer C, thelongitudinal axis of which must necessarily coincide with that of theblank at the time of the heading operation to produce a perfect head.

Heretofore the machine has contained no devices forboth laterall v andvertically adjusting the said hammer; consequently much time has beenlost in properly aligning it. Now, to accomplish this desirable object,I mount the block R, which holdsthe hammer (l, in a socket in the end ofthe sliding head B, and incline the sides ofthe said block and socket asshown at Fig. 4, sp that by moving the block longitudinally the hammeris adjusted laterally, this movement being performed by the engagementof the pinion s on a spindle, S, with a rack on one side of the block.For vertical adjustment the block 1t is seated on a wedge, T, working onthe inclined bottom of the socket, one side of the wedge being a rack,with which engages a pinion, u, on a spindle, l', Figs. 4 and 5, so thatby moving the wedge longitudinally the block and its halnmer areadjusted vertically. The upper ends of the spindles S U are squared toreceive a wrench, and they are journaled in the plunger B and cap-plateb, the said cap-plate being secured to the sliding head and furnishedwith clamp-screws V V, to secure the block and its hammer in an adjustedposition. By this arrangement the vertical and lateral adjustment of thehammer may he easily accomplished, it only being necessary to turn thespindles S U to effect it.

The next and last feature of my invention relates to lneans foroperating and timing the movements of the gage W, which determines theproper length to be cut ofi' the wire to form the blank, but which mustmove out of the way of the hcading-hannner. This gage derives itsmovements from the mechanism which is employed to feed the wire. Thesaid feeding mechanism is of the usual kind, and consists of a pair offeeding-rollcrs, a ratchet and pawl, a connecting-rod, and a slidingrod, VV, having a depending arm, '2, to which the said connecting-rod isattached. the said feeding mechanism deriving its motions from a cam, X,upon the shaft E.

The gage W is secured to a shaft, 1r, Figs. 3 and 6, which is journaledin block 1c', attached to the frame of the machine. This block should beso attached to the frame ofthe machine as to be longitudinallyadjustable thereon, or, what would be the same in effect, the shaft onwhich the guide is mounted should be longitudinally adjustable in itsbearings. Se cured to the shaft uis an arm, .r, which is made to takebearing bythe force of a spring upon an arm, sleeved upon the shaft u,the end of said arm x' working in an inclined slot, y, in a plate, Y,which is placed upon an arm,

y', secured to the depending arm W2 of the sliding rod. Thus, whensliding rod Wl is moved by the cam X, the gage is moved inward andoutward by the rocking ot' the shaft to which it is attached as theresult of the action of the inclined slot y in the plate Y upon the arms.r x'.

The movements of the gage are required to be varied-as, for example,when blanks of larger diameter are heilig worked in place of one ofsmaller diameter. It becomes necessary therefore to have a means foradjusting the movements of the gage so that it will get out of the wayand come back to place promptly. This is effected by the movement of theplate Y upon the army', upon which arm it can be adjusted to anyposition by a setscrew.

It will be observed that the arm a', which is secured to thc shaft u',has an ear-piece upon its side, which takes bearing upon the arm a", theend of which works in the inclined slot y of the adjustable plate Y.

The advantage of this arrangement is that the metal of the blank out ofwhich the bolt is to be made must, fora larger head, project, before theswaging operation is performed, to a greater distance beyond the face ofthe anviljaws G G than would be required in case a smaller head were tobe made. This requires au adjustment ofthe gage W to correspond to thischan ge of conditions under which the machine is to be worked. Thisadjustmentof the gage is effected by a movement of the block w', inwhich the gage-shaft w is journaled, when said block is adjustablymounted on the frame, as before herein indicated. The times of themovement of the gage, however, may be required to be the same, and bythis arrangement ofthe two arms a" and x it follows that the distance towhich the gage may stand from the face of the jaws G G may be variedwithout altering the times of the movement of the gage.

Machines for headin g bolts have heretofore embodied feed-rolls, tubularblocks, movable dies for cutting ot' the rod, and headers, and I make noclaim thereto in whole or in part, except in the particular combinationsof mechanism hereinafter specified.

The advantages derived by the use of my improvements are a greater speedof production and less shock to the machine than when toggle-levers areused; by the employment of an eccentric and link to move the headinghammer and a cam, long lever and short levered saddle to move and clampthe gripingjaws, a ready vertical and lateral adjustment of theheading-hammer, that it may properly perform its oftice, and a quick andaccurate adjustment of the gage todetermine the movements of the same.

Having described my invention, what I claim, and desire to secure byLetters Patent, 1s

1. In a machine for heading bolt or screw blanks, the combination andarrangement of the griping-jaws, a rocking saddle upon which the-saidjawfs are mounted, a lever connected with said saddle, and a cam uponthe main shaft, substantially as described, and for the purposesspecified.

2. The combination of the griping-jaws, a rocking saddle, upon which thesame are mounted, a lever connected with said saddle, a cam upon themain shaft, and the tubular block, through which the wire is fed,substantially as described, and for the purposes specified. 4

3. The combination, substantialljT as described, of the block to whichthe headinghammer is attached, the socket in the sliding head containingsuch block, (when such block and socket are constructed with inclinedfaces, as described,)-a Wedge or inclined plane, upon which the saidblock is seated, and rack and pinion gears, combined with the block andwedge, respectively, whereby the said block and the hammer attachedthereto can be adjusted both vertically and laterally, as set forth.

4. The combination of the vibrating gage W, the rocking shaft to whichsuch gage is attached, and the adjustable reciprocating slotted plate Y,and its operating-cam, for timing the movements of the gage,substantially as described.

5. The combination and arrangement of the slotted plate Y, adjustable'on an arm which is moved by a cam, the arms x x', and the rocking shaftto which 'the gage W is attached, whereby the face of the gage may beadjusted relativeljr to the faces of the jaws Without disarranging thetimes of the movements of the gage, substantially as described.

CHARLES D. ROGERS.

Witnesses HENRY J. SPooNER, W. H. THURsToN. Y

